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Merge pull request #10929 from bablokb/badger2350
Add support for Pimoroni Badger2350
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‎ports/raspberrypi/boards/pimoroni_badger2350/badger2350-shared.h‎

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// This file is part of the CircuitPython project: https://circuitpython.org
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//
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// SPDX-FileCopyrightText: Copyright (c) 2021 Scott Shawcroft for Adafruit Industries
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//
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// SPDX-License-Identifier: MIT
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#pragma once
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#include "py/obj.h"
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#include "shared-bindings/digitalio/DigitalInOut.h"
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extern digitalio_digitalinout_obj_t i2c_power_en_pin_obj;
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extern const mp_obj_fun_builtin_fixed_t set_update_speed_obj;
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extern const mp_obj_fun_builtin_fixed_t get_reset_state_obj;
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extern const mp_obj_fun_builtin_fixed_t on_reset_pressed_obj;

‎ports/raspberrypi/boards/pimoroni_badger2350/board.c‎

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// This file is part of the CircuitPython project: https://circuitpython.org
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//
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// SPDX-FileCopyrightText: Copyright (c) 2024 Bob Abeles
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//
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// SPDX-License-Identifier: MIT
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#include "py/obj.h"
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#include "mpconfigboard.h"
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#include "shared-bindings/busio/SPI.h"
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#include "shared-bindings/fourwire/FourWire.h"
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#include "shared-bindings/microcontroller/Pin.h"
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#include "shared-bindings/digitalio/DigitalInOut.h"
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#include "shared-bindings/microcontroller/Pin.h"
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#include "shared-module/displayio/__init__.h"
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#include "supervisor/shared/board.h"
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#include "supervisor/board.h"
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#include "badger2350-shared.h"
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#include "hardware/gpio.h"
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#include "hardware/structs/iobank0.h"
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digitalio_digitalinout_obj_t i2c_power_en_pin_obj;
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static volatile uint32_t reset_button_state = 0;
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// Forward declaration to satisfy -Wmissing-prototypes
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static void preinit_button_state(void) __attribute__((constructor(101)));
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// pin definitions
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// Button pin definitions for Badger2350
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#define SW_A_PIN 7
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#define SW_B_PIN 9
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#define SW_C_PIN 10
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#define SW_DOWN_PIN 6
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#define SW_UP_PIN 11
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static const uint8_t _sw_pin_nrs[] = {
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SW_A_PIN, SW_B_PIN, SW_C_PIN, SW_DOWN_PIN, SW_UP_PIN
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};
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// Mask of all front button pins
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#define SW_MASK ((1 << SW_A_PIN) | (1 << SW_B_PIN) | (1 << SW_C_PIN) | \
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(1 << SW_DOWN_PIN) | (1 << SW_UP_PIN))
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// This function runs BEFORE main() via constructor attribute!
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// This is the key to fast button state detection.
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// Priority 101 = runs very early
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static void preinit_button_state(void) {
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// Configure button pins as inputs with pull-downs using direct register access
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// This is faster than SDK functions and works before full init
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for (size_t i = 0; i < sizeof(_sw_pin_nrs); i++) {
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uint8_t pin_nr = _sw_pin_nrs[i];
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// Set as input
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sio_hw->gpio_oe_clr = 1u << pin_nr;
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// enable pull-ups
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pads_bank0_hw->io[pin_nr] = PADS_BANK0_GPIO0_IE_BITS |
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PADS_BANK0_GPIO0_PUE_BITS;
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// Set GPIO function
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iobank0_hw->io[pin_nr].ctrl = 5; // SIO function
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}
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// Small delay for pins to settle (just a few cycles)
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for (volatile int i = 0; i < 100; i++) {
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__asm volatile ("nop");
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}
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// Capture button states NOW - before anything else runs
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reset_button_state = ~sio_hw->gpio_in & SW_MASK;
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}
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static mp_obj_t _get_reset_state(void) {
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return mp_obj_new_int(reset_button_state);
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}
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MP_DEFINE_CONST_FUN_OBJ_0(get_reset_state_obj, _get_reset_state);
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static mp_obj_t _on_reset_pressed(mp_obj_t pin_in) {
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mcu_pin_obj_t *pin = MP_OBJ_TO_PTR(pin_in);
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return mp_obj_new_bool(
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(reset_button_state & (1 << pin->number)) != 0);
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}
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MP_DEFINE_CONST_FUN_OBJ_1(on_reset_pressed_obj, _on_reset_pressed);
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// The display uses an SSD1680 control chip.
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uint8_t _start_sequence[] = {
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0x12, 0x80, 0x00, 0x14, // soft reset and wait 20ms
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0x11, 0x00, 0x01, 0x03, // Ram data entry mode
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0x3c, 0x00, 0x01, 0x03, // border color
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0x2c, 0x00, 0x01, 0x28, // Set vcom voltage
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0x03, 0x00, 0x01, 0x17, // Set gate voltage
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0x04, 0x00, 0x03, 0x41, 0xae, 0x32, // Set source voltage
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0x4e, 0x00, 0x01, 0x00, // ram x count
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0x4f, 0x00, 0x02, 0x00, 0x00, // ram y count
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0x01, 0x00, 0x03, 0x07, 0x01, 0x00, // set display size
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0x32, 0x00, 0x99, // Update waveforms
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// offset 44
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0x40, 0x68, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // VS L0
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0xA0, 0x65, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // VS L1
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0xA8, 0x65, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // VS L2
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0xAA, 0x65, 0x50, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // VS L3
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // VS L4
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// offset 104
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0x02, 0x00, 0x00, 0x05, 0x0A, 0x00, 0x03, // Group0 (with default speed==0)
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// offset 111
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0x19, 0x19, 0x00, 0x02, 0x00, 0x00, 0x03, // Group1 (with default speed==0)
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// offset 118
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0x05, 0x0A, 0x00, 0x00, 0x00, 0x00, 0x03, // Group2 (with default speed==0)
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// offset 125
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // Group3
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // Group4
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // Group5
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // Group6
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // Group7
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // Group8
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // Group9
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // Group10
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // Group11
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0x44, 0x42, 0x22, 0x22, 0x23, 0x32, 0x00, // Config
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0x00, 0x00, // FR, XON
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0x22, 0x00, 0x01, 0xc7, // display update mode
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};
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const uint8_t _stop_sequence[] = {
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0x10, 0x00, 0x01, 0x01 // DSM deep sleep mode 1
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};
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const uint8_t _refresh_sequence[] = {
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0x20, 0x00, 0x00 // ADUS
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};
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// Change update speed. This changes the repeat-count in the LUTs
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// Pimoroni uses: 0 == slow ... 3 == fast
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// and calculates the LUT repeat count as 3-speed
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#define SPEED_OFFSET_1 110
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#define SPEED_OFFSET_2 117
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#define SPEED_OFFSET_3 124
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static mp_obj_t _set_update_speed(mp_obj_t speed_in) {
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mp_int_t speed = mp_obj_get_int(speed_in);
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uint8_t count = (uint8_t)3 - (uint8_t)(speed & 3);
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_start_sequence[SPEED_OFFSET_1] = count;
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_start_sequence[SPEED_OFFSET_2] = count;
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_start_sequence[SPEED_OFFSET_3] = count;
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return mp_const_none;
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}
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MP_DEFINE_CONST_FUN_OBJ_1(set_update_speed_obj, _set_update_speed);
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void board_init(void) {
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// Drive the I2C_POWER_EN pin high
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i2c_power_en_pin_obj.base.type = &digitalio_digitalinout_type;
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common_hal_digitalio_digitalinout_construct(
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&i2c_power_en_pin_obj, &pin_GPIO27);
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common_hal_digitalio_digitalinout_switch_to_output(
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&i2c_power_en_pin_obj, true, DRIVE_MODE_PUSH_PULL);
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common_hal_digitalio_digitalinout_never_reset(&i2c_power_en_pin_obj);
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fourwire_fourwire_obj_t *bus = &allocate_display_bus()->fourwire_bus;
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busio_spi_obj_t *spi = &bus->inline_bus;
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common_hal_busio_spi_construct(spi, &pin_GPIO18, &pin_GPIO19, NULL, false);
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common_hal_busio_spi_never_reset(spi);
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bus->base.type = &fourwire_fourwire_type;
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common_hal_fourwire_fourwire_construct(bus,
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spi,
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MP_OBJ_FROM_PTR(&pin_GPIO20), // EPD_DC Command or data
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MP_OBJ_FROM_PTR(&pin_GPIO17), // EPD_CS Chip select
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MP_OBJ_FROM_PTR(&pin_GPIO21), // EPD_RST Reset
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12000000, // Baudrate
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0, // Polarity
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0); // Phase
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// create and configure display
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epaperdisplay_epaperdisplay_obj_t *display = &allocate_display()->epaper_display;
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display->base.type = &epaperdisplay_epaperdisplay_type;
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epaperdisplay_construct_args_t args = EPAPERDISPLAY_CONSTRUCT_ARGS_DEFAULTS;
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args.bus = bus;
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args.start_sequence = _start_sequence;
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args.start_sequence_len = sizeof(_start_sequence);
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args.stop_sequence = _stop_sequence;
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args.stop_sequence_len = sizeof(_stop_sequence);
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args.width = 264;
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args.height = 176;
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args.ram_width = 250;
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args.ram_height = 296;
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args.rotation = 270;
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args.set_column_window_command = 0x44;
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args.set_row_window_command = 0x45;
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args.set_current_column_command = 0x4e;
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args.set_current_row_command = 0x4f;
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args.write_black_ram_command = 0x24;
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args.write_color_ram_command = 0x26;
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args.color_bits_inverted = true;
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args.refresh_sequence = _refresh_sequence;
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args.refresh_sequence_len = sizeof(_refresh_sequence);
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args.refresh_time = 1.0;
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args.busy_pin = &pin_GPIO16;
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args.busy_state = true;
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args.seconds_per_frame = 3.0;
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args.grayscale = true;
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args.two_byte_sequence_length = true;
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args.address_little_endian = true;
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common_hal_epaperdisplay_epaperdisplay_construct(display, &args);
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}
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void board_deinit(void) {
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epaperdisplay_epaperdisplay_obj_t *display = &displays[0].epaper_display;
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if (display->base.type == &epaperdisplay_epaperdisplay_type) {
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while (common_hal_epaperdisplay_epaperdisplay_get_busy(display)) {
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RUN_BACKGROUND_TASKS;
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}
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}
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common_hal_displayio_release_displays();
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}
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// Use the MP_WEAK supervisor/shared/board.c versions of routines not defined here.

‎ports/raspberrypi/boards/pimoroni_badger2350/link.ld‎

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firmware_size = 1532k;

‎ports/raspberrypi/boards/pimoroni_badger2350/mpconfigboard.h‎

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// This file is part of the CircuitPython project: https://circuitpython.org
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//
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// SPDX-FileCopyrightText: Copyright (c) 2026 Bernhard Bablok
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//
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// SPDX-License-Identifier: MIT
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#define MICROPY_HW_BOARD_NAME "Pimoroni Badger 2350"
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#define MICROPY_HW_MCU_NAME "rp2350a"
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#define CIRCUITPY_DIGITALIO_HAVE_INVALID_PULL (1)
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#define CIRCUITPY_DIGITALIO_HAVE_INVALID_DRIVE_MODE (1)
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#define MICROPY_HW_LED_STATUS (&pin_GPIO0)
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#define DEFAULT_I2C_BUS_SDA (&pin_GPIO4)
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#define DEFAULT_I2C_BUS_SCL (&pin_GPIO5)
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#define DEFAULT_SPI_BUS_SCK (&pin_GPIO18)
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#define DEFAULT_SPI_BUS_MOSI (&pin_GPIO19)
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#define CIRCUITPY_PSRAM_CHIP_SELECT (&pin_GPIO8)

‎ports/raspberrypi/boards/pimoroni_badger2350/mpconfigboard.mk‎

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USB_VID = 0x2E8A
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USB_PID = 0x1100
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USB_PRODUCT = "Pimoroni Badger 2350"
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USB_MANUFACTURER = "Pimoroni"
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CHIP_VARIANT = RP2350
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CHIP_PACKAGE = A
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CHIP_FAMILY = rp2
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EXTERNAL_FLASH_DEVICES = "W25Q128JVxQ"
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CIRCUITPY__EVE = 1
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CIRCUITPY_CYW43 = 1
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CIRCUITPY_SSL = 1
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CIRCUITPY_HASHLIB = 1
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CIRCUITPY_WEB_WORKFLOW = 1
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CIRCUITPY_MDNS = 1
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CIRCUITPY_SOCKETPOOL = 1
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CIRCUITPY_WIFI = 1
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# PIO clock divider set to 2 (default), consider changing if TM2 gSPI
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# becomes unreliable.
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CFLAGS += \
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-DCYW43_PIN_WL_DYNAMIC=0 \
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-DCYW43_DEFAULT_PIN_WL_HOST_WAKE=24 \
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-DCYW43_DEFAULT_PIN_WL_REG_ON=23 \
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-DCYW43_DEFAULT_PIN_WL_CLOCK=29 \
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-DCYW43_DEFAULT_PIN_WL_DATA_IN=24 \
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-DCYW43_DEFAULT_PIN_WL_DATA_OUT=24 \
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-DCYW43_DEFAULT_PIN_WL_CS=25 \
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-DCYW43_WL_GPIO_COUNT=3 \
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-DCYW43_PIO_CLOCK_DIV_INT=2 \
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-DCYW43_PIO_CLOCK_DIV_FRAC=0
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# Must be accompanied by a linker script change
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CFLAGS += -DCIRCUITPY_FIRMWARE_SIZE='(1536 * 1024)'
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FROZEN_MPY_DIRS += $(TOP)/frozen/circuitpython-pcf85063a

‎ports/raspberrypi/boards/pimoroni_badger2350/pico-sdk-configboard.h‎

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// This file is part of the CircuitPython project: https://circuitpython.org
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//
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// SPDX-FileCopyrightText: Copyright (c) 2024 Bob Abeles
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//
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// SPDX-License-Identifier: MIT
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#pragma once
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// Put board-specific pico-sdk definitions here. This file must exist.

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